package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.RequestBody;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
	@Autowired
	private CategoryMapper categoryMapper;
	@Autowired
	private DishMapper dishMapper;

	@Override
	public List<Category> list(Integer type) {

		return categoryMapper.list(type);
	}

	@Override
	public PageResult page(CategoryPageQueryDTO categoryPageQueryDTO) {
		Category category = new Category();
		category.setType(categoryPageQueryDTO.getType());
		PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
		Page<Category> page = categoryMapper.pageQuery(category);
		return new PageResult(page.getTotal(), page.getResult());
	}

	@Override
	public void save(CategoryDTO categoryDTO) {
		Category category = new Category();
		BeanUtils.copyProperties(categoryDTO, category);

		category.setType(StatusConstant.ENABLE);

		//category.setCreateTime(LocalDateTime.now());
		//category.setUpdateTime(LocalDateTime.now());
		//category.setCreateUser(BaseContext.getCurrentId());
		//category.setUpdateUser(BaseContext.getCurrentId());

		categoryMapper.insert(category);
	}

	@Override
	public void startOrStop(Integer status, Long id) {

		Category category = Category.builder()
				.status(status)
				.id(id)
				.build();
		category.setUpdateTime(LocalDateTime.now());
		categoryMapper.update(category);

	}

	@Override
	public void update(@RequestBody CategoryDTO categoryDTO) {
		Category category = new Category();
		BeanUtils.copyProperties(categoryDTO, category);
		//category.setUpdateTime(LocalDateTime.now());
		//category.setUpdateUser(BaseContext.getCurrentId());
		categoryMapper.update(category);
	}

	@Override
	public void deleteById(Long id) {
		// 查询是否关联菜品
		Integer count = dishMapper.countByCategoryId(id);
		if (count > 0) throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);

		//TODO 查询当前分类是否关联了套餐，如果关联了就抛出业务异常

		categoryMapper.deleteById(id);
	}
}
